Molded case circuit breaker
AssigneeLsis Co., Ltd.
InventorsKihwan Oh, Kyunghwan Oh
Life of this patent
Estimating the term…
Abstract
The present disclosure relates to a molded case circuit breaker, and more particularly, to a contact unit of a molded case circuit breaker. A molded case circuit breaker according to an embodiment of the present disclosure may include a fixed contact; a movable contact rotatably provided on a shaft body to be brought into contact with or separated from the fixed contact; and an insulating barrier that enters between the fixed contact and the movable contact during interruption, wherein the insulating barrier is coupled to the movable contact to rotate along a circumferential surface of a shaft body.
Claims11
A molded case circuit breaker, comprising:
- a fixed contact;
- a movable contact configured to be brought into contact with or separated from the fixed contact;
- an insulating barrier configured to enter between the fixed contact and the movable contact during interruption, wherein the insulating barrier comprises a free end portion and is formed of a flexible material, and
- a guide portion protruded on part of a base mold and configured to guide the free end portion of the insulating barrier,
- wherein the insulating barrier is coupled to the movable contact to rotate along a circumferential surface of a shaft body,
- wherein the guide portion comprises a pair of protrusion portions spaced apart from each other,
- wherein when an external force does not act on the insulating barrier, the insulating barrier is configured to maintain a shape of surrounding the circumferential surface of the shaft body, and be bent by being brought into contact with the guide portion, and
- wherein when the movable contact is connected to the fixed contact, the free end portion of the insulating barrier is configured to be lifted up from the shaft body by the guide portion.
A molded case circuit breaker, comprising:
- a fixed contact;
- a movable contact configured to be brought into contact with or separated from the fixed contact;
- and
- an insulating barrier configured to enter between the fixed contact and the movable contact during interruption,
- wherein the insulating barrier is coupled to the movable contact to rotate along a circumferential surface of a shaft body,
- wherein a circumferential groove-shaped plate groove is formed on the shaft body, and a contact plate sliding along the plate groove is provided in the plate groove.
A molded case circuit breaker, comprising:
- a fixed contact;
- a movable contact configured to be brought into contact with or separated from the fixed contact;
- and
- an insulating barrier configured to enter between the fixed contact and the movable contact during interruption,
- wherein the insulating barrier is coupled to the movable contact to rotate along a circumferential surface of a shaft body,
- wherein the insulating barrier comprises a cover portion covering an opening portion of the shaft body and an arc interrupting portion extended to one end of the cover portion,
- wherein a mover insertion hole into which the movable contact is configured to be inserted is formed on the cover portion.
Dependencies are inferred from the claim text.